Improvement in carpet-sweepers



E. W. SMITH. CARPET-SWEEPER' Patented Nov. 28,1876.

A he shaft longitudinally,

EMERY W. SMITH, OF BOSTON, MASSACHUSETTS.

vlilflF'RCZ ifEllIlElill' IN CARPET-PSWEEPERSV' Specification forming part of Letters Patent No.184l,735, dated November 28, 1876 application filed October 10, 1876.

To all whom it may concern:

Be it known that I, EMERY W. SMITH, of Boston, Suffolk county, Massachusetts, have .invented Improvements in GarpetSwcepers, of which the following is the specification:

tion consists in certain devices, fully described hereafter, to facilitate the removal and inser. tion of 'the shaft; also, in an improvement in thebail.

, I the accompanying drawing, Figure 1 is a plan view (part of the cap being removed) of sweeper with my improvements; Fig. 2, an nlargcd sectional view.

The case A of the sweeper is made in the or inary manner, and provided with bands or wlieels for driving the brush-shaft B. On each end of the shaft is a cap or ferrule, d, from which projects a journal. At one end of the case is an adjustable metal plate, D, containing a socket or hearing for the adjacent journal at; but the other plate, I), is provided with a hollow enlargcnnant or boss, 0, which projects inward through an opening in the end fot the case, and provided with a cap, 6, having an opening to receive the journal a. A pin, i, slides in the hollow boss 0, its stern projecting through the opening in the plate 1), and its head being liltlllitz'l-iilc d in contact with the end of the journal a by a spring, a, that throws it inward; An annular flange, 9, extends from the end for" the box, and incloses the adjacentend of the brush shaft, preventing strings from being wound about the journal. When the shaft is in its position the end is not in contact with the boss 0, but is so far therefrom that when it moved longitudinally into contact therewith the opposite journal at will be withdrawn from its socket,

permitting the shaft to be detached.

In replacing the shaft the journal a is first passed into the opening in the end. of the boss 0, the shaft is thrust toward the latter, and brought with its journal a cpposilo the opening in the plate I), when is released, and

the spring a will act on the pin i and throw ert the journal at n there.

"ual a closes the in the opening, and main! it will be seen that the opening in the boss,that the stern of the pin i closes the outer opening, and that the head of the pin covers the inner opening when the shaft is removed, thus most effectually proventing the access of dust to the spring-chamher at all times.

It will be apparent that a rubber spring may be substituted for the coiled metal spring, a plate being substituted for the head of the bolt or pin 2', and that the hollow boss may be secured within the case independent of the plate D.

()ne of the main advantages of the arrangement described results from the fact thatit is not necessary to bore any recess or opening in' the shaft.

In the sweeper for which Letters Patent were granted to me on the 19th day of September, 1876, the bail I had a threaded sock- -..et to receive the handle; but said socket was closed at the bottom, thus preventing the handle, when loose, from being screwed farther in and tightened. I overcome this difliculty by making the socket as, Fig. 1, open at both ends, permitting the handle to be can ried inward until wedged perfectly tight.

l.- The combination of the shaft, having a journal at each end, and a hollow boss, c, secured to the case, having an opening to receive one of the journals, and containing a spring, by which the shaft is thrown toward the opposite bcaring,.for the purpose set forth.

The plate D, carrying the hollow boss 6, having an opening at the end for the reception of the journal of the brush shaft, and containing a spring, as described.

3. The combination of the plate D, boss 0, and spring-pin i, the stern extending through the opening in the plate, and the head covering the opening at the end of the hoss,as set forth.

4. The bail provided with-a screw-socket, a open at both ends, as set forth.

In testimony whereof I have signed my name to this specification in the presence of two suh scribing witnesses.

' EMERY W. SMITH. Witnesses:

(Inns. DELANO,

CHARLES N. ULARK. 

